9944391 has 16 divisors (see below), whose sum is σ = 14198400. Its totient is φ = 6172128.

The previous prime is 9944387. The next prime is 9944393. The reversal of 9944391 is 1934499.

It is not a de Polignac number, because 9944391 - 2² = 9944387 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9944393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1885 + ... + 4841.

It is an arithmetic number, because the mean of its divisors is an integer number (887400).

Almost surely, 2^9944391 is an apocalyptic number.

9944391 is a deficient number, since it is larger than the sum of its proper divisors (4254009).

9944391 is a wasteful number, since it uses less digits than its factorization.

9944391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038.

The product of its digits is 34992, while the sum is 39.

The square root of 9944391 is about 3153.4728475127. The cubic root of 9944391 is about 215.0433732578.

The spelling of 9944391 in words is "nine million, nine hundred forty-four thousand, three hundred ninety-one".